<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<script>
var a = 12 ; 
alert(a);
	
var arr = [1,2,3,4,5];
arr.c = 15;
alert(arr.c);
</script>
</head>

<body>
</body>
</html>
